The Amarna reform is regularly described as the first monotheism, and it is the description that Egyptologists spend the most effort qualifying. The evidence that pulls in that direction is real: other gods lost their revenues, Amun's name was systematically hacked out of monuments the length of the country, and the plural word for gods was itself attacked in some inscriptions. The evidence pulling the other way is equally real. Worship of the Aten in the surviving private shrines at Amarna is mediated through the royal family, so householders pray to the king and the king prays to the disc, an arrangement that looks less like a faith open to everyone than a court cult with the state at its centre.
One camp reads the reform as a genuine revolution in religious thought, a deliberate break that introduced the idea of a single true god and made every other god false, and treats the violence of the erasures as the mark of that break. A second camp reads it as an extension of long standing Egyptian solar theology, in which the sun god absorbs the functions of other gods, pushed further than usual by a king who needed a theology that placed him alone between the god and everybody else. A third position doubts that the reform touched ordinary practice much at all outside the new city and the court that lived in it.
The atlas records the dispute rather than picking a winner. What is not disputed is the aftermath: within a generation the court was back at Thebes, the city was abandoned, Amun's revenues were restored, and Akhenaten's name was omitted from the official king lists, which jump from his predecessor to Horemheb as if the intervening reigns had not happened.